But fifteen percent of those taking the placebo and aspirin had them.

VOA: special.2009.10.20

Seventy-four people in the placebo group became infected during the study.

VOA: special.2009.10.13

Others would have received a placebo sugar pills -- for comparison.

VOA: special.2009.09.01

The other half received a placebo, an inactive substance.

VOA: special.2009.09.30

In the placebo group, seventeen percent had these ulcers.

VOA: special.2009.10.20

It was only a placebo, a harmless substance.

VOA: special.2009.10.20

It was properly powered,randomized and placebo-controlled and really provides evidence for the use of oxygen in cluster headaches,"

VOA: standard.2009.12.17

Half of the overall test group of more than 16,000 people received the doses, while the other 8,000 people in the trial received a placebo.

VOA: standard.2009.10.20

"Twenty percent of attacks were improved on placebo,which is air, and 78 percent of attacks were improved on oxygen, a clear difference in favor of oxygen,"

VOA: standard.2009.12.17

Jay Fournier, the study's lead author, "What we found was that patients who are on the lower end of the severity, the medications weren't doing much more than the placebo was.

VOA: standard.2010.01.08

Some were given antidepressants. Others received a placebo.

VOA: standard.2010.01.08

"If you look at the large studies, that were published over the last several years, including a large number of patients comparing Avandia to a placebo or other drugs, there was actually no increase in that risk.

VOA: standard.2010.03.02